EP 2982940 B1 20190102 - ANGLE DETECTION DEVICE AND SURVEY INSTRUMENT INCLUDING THE SAME
Title (en)
ANGLE DETECTION DEVICE AND SURVEY INSTRUMENT INCLUDING THE SAME
Title (de)
WINKELERKENNUNGSVORRICHTUNG UND VERMESSUNGSINSTRUMENT DAMIT
Title (fr)
DISPOSITIF DE DÉTECTION D'ANGLE ET INSTRUMENT DE SONDAGE COMPRENANT CELUI-CI
Publication
Application
Priority
JP 2014159065 A 20140804
Abstract (en)
[origin: EP2982940A1] An angle detection device (30) includes photoemitters (35), photodetectors (36), a scale plate (34) disposed therebetween, and a control section (33) to control them. The control section (33) includes an AFE (43) to convert analog signals (Ia) of the photodetectors (36) to digital signals (Id) and an arithmetic processor (44) to detect a rotating posture of the scale plate (34) based on the digital signals (Id). The control section (33) simultaneously emits lights from the photoemitters (35) and simultaneously receives the lights by the photodetectors (36). The control section (33) then executes the following data processing for each photodetector (36) one by one in sequence: outputting the analog signals representing an entire area of a light-receiving area of one of the photodetectors and outputting the digital signals converted by the AFE to the processor (44).
IPC 8 full level
G01D 5/347 (2006.01); G01C 1/02 (2006.01); G01C 3/02 (2006.01); G01C 15/00 (2006.01)
CPC (source: CN EP US)
G01C 1/00 (2013.01 - CN); G01C 3/02 (2013.01 - US); G01D 5/3473 (2013.01 - EP US); G01C 1/02 (2013.01 - EP US); G01C 15/002 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2982940 A1 20160210; EP 2982940 B1 20190102; CN 105333858 A 20160217; CN 105333858 B 20180608; JP 2016035438 A 20160317; JP 6449584 B2 20190109; US 2016033307 A1 20160204; US 9714848 B2 20170725
DOCDB simple family (application)
EP 15179491 A 20150803; CN 201510457977 A 20150730; JP 2014159065 A 20140804; US 201514816253 A 20150803